The roommate of a man fatally injured during the riots that followed the San Francisco Giants' World Series win said he is puzzled that police aren't doing more to solve the cause of his friend's death.

Danny Waldrip, 58, said police have been actively seeking public help in finding those responsible for vandalizing a Muni bus but, so far, haven't sought the same level of help in solving what happened to his roommate, Sean Moffitt, 37.

Moffitt died last week from a head injury sustained on Oct. 28.

Police have called it a suspicious death, not a homicide, and are awaiting the findings of the city's medical examiner.

Officials said patrol officers spotted the injured Moffitt near Haight and Masonic streets that night as hundreds of Giants fans celebrated in the streets. The officers said they called paramedics, but Moffitt declined medical treatment.

"One of the things that bothered me is that police said, supposedly, some guys came up to them while they were out on Haight Street and said, 'There's a guy over here who's down and he needs help,' " Waldrip said. "I don't see them (the police) on the news asking for these people to come forward.

"I know the police have been contacting me and his mom, and been looking over some video of storefronts, but it seems like they should be asking the public for help, too," he continued. "It just seems logical."

Waldrip said Moffitt returned to their apartment near Haight Street about 10:30 p.m., looking as if he had been assaulted.

"His cheek or forehead was swollen, and the other side had a little cut or bruise on it," Waldrip said. "He said five Fillmore kids had jumped him. They had jumped him and hit him on the back of the head with something at the end of a rope or chain. He showed me a huge knot at the base of the skull."

Moffitt vomited twice before going to bed, and Waldrip said he was worried that Moffitt had a concussion.

"He kept telling me, 'I'm OK, quit checking on me,' " Waldrip said.

The next morning, Moffitt wouldn't wake up.

He was rushed to the hospital, where doctors removed a portion of his skull to relieve pressure, Waldrip said. It wasn't enough to save him, and his family took him off life support about 2 p.m. on Oct. 30.

Police said the case is still under investigation and they are looking into the assault allegations.

Police also say there is a possibility that Moffitt's death was an accident.

Waldrip said investigators mentioned that revelers had been jumping on a mattress in the area where Moffitt was found, and believe it was possible that Moffitt had fallen.

Police spokesman Officer Albie Esparza said the medical examiner has not determined whether the death was accidental or not. Because it had only been labeled a suspicious death, there was only so much the police could do in asking for public assistance, Esparza said.

"We can't bring something forth if we don't know what it is," Esparza said. Police have since asked for witnesses to come forward.

Waldrip described his roommate of four years as a very loving, peaceful man who wanted to attend City College in the spring to become a paralegal.

"If you would have known him - just his laugh and his smile - he was a very generous, very kind person," Waldrip said. "He had a lot of plans for his life and then this just happened."

Waldrip said he just wants to know what happened to his friend.

"I don't want to put the police down," he said. "I just wish they would do a little bit more to reach out to the public."